#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);

int ledPin = 15;                
int inputPin = 14;               
int pirState = LOW;             
int val = 0;                    

void setup() {
  pinMode(ledPin, OUTPUT);      
  pinMode(inputPin, INPUT);     

  LCD.init();
  LCD.backlight();
  LCD.setCursor(1,0);
  LCD.print("  TUGAS SIMULASI  ");
  LCD.setCursor(1,1);
  LCD.print("  AISYAH SYAHRIL   ");
  delay (500);

  LCD.clear();
  LCD.setCursor(1,0);
  LCD.print("SISTEM PEMANTAU KEAMANAN");
  LCD.setCursor(1,1);
  LCD.print("KEAMANAN RUMAH");
  delay (500);

  LCD.clear();
  LCD.setCursor(1,0);
  LCD.print("    MULAI     ");
  delay(700);
  LCD.clear();
}

void loop() {
  val = digitalRead(inputPin);  
  if (val == LOW) {            
    digitalWrite(ledPin, LOW);  
    if (pirState == LOW) {
      
      LCD.init();
      LCD.backlight();
      LCD.setCursor(0,0);
      LCD.print("TIDAK TERDETEKSI");
      LCD.setCursor(0,1);
      LCD.print("    GERAKAN    ");
      
      pirState = HIGH;
    }
  } else {
    digitalWrite(ledPin, HIGH); 
    if (pirState == HIGH) {  
       
      LCD.init();
      LCD.init();
      LCD.backlight();
      LCD.setCursor(0,0);
      LCD.print("   TERDETEKSI   ");
      LCD.setCursor(0,1);
      LCD.print("    GERAKAN    ");
      
      pirState = LOW;
    }
  }
}